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Showing results for operating system.
Definitions

operating system

[op-uh-rey-ting sis-tuhm] / ˈɒp ə reɪ tɪŋ ˌsɪs təm /
NOUN
computer software for basic operation
Synonyms
WEAK
MS-DOS MacOS OS OS/2 UNIX Windows disk operating system dos executive system software systems program

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"Mac and Windows are the operating systems for the personal computer. OpenClaw is the operating system for personal AI," Nvidia's chief executive Jensen Huang said in a statement.

From Barron's • Mar. 16, 2026

The case claims the shop built into the PlayStation's operating system was designed to make players a "captive class".

From BBC • Mar. 10, 2026

On top of the 699-euro phone, Punkt requires a 10-euro monthly subscription after one year of use, which the company says covers the costs of the operating system.

From Barron's • Mar. 4, 2026

Gen AI, in particular, will move from a co-pilot to an operating system for finance — engaging with stocks, fixed income, derivatives and other assets.

From MarketWatch • Feb. 25, 2026

This is how having a funny brain that runs on a different operating system from other people’s helped me to figure out what had happened.

From "The London Eye Mystery" by Siobhan Dowd

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.